Table 5. GCF characteristics.
| Ref No. | Time | tp | hm | mt/o cl | ins (in mm) | du/o mm | rep mm | i/o mm | mt/o mm | tp of st | mt/o al | pr cc |
| 7 | NM | 30% | 21°C | PP | NM | 30s | NM | NM | PT6000 | NM | ELISA | pg /30-s |
| 8 | NM | NM | NM | PP | NM | 30s | 4 | NM | NM | -70°C | SP | PMNs/µl |
| 9 | NM | NM | NM | PP | 1mm | 1min | 3 | 1min | NM | NM | SP | IU/1 µl |
| 10 | NM | NM | NM | PP | NM | 1min | NM | NM | PT 8000 | -70°C | SP | IU/L |
| 11 | NM | NM | NM | PP | 1-2mm | 1min | 3 | NM | NM | -20°C | ELISA | LDH, AST-mIU/ml, TRAP, ALP-ng/ml |
| 12 | NM | NM | NM | PP | NM | 30s | 4 | NM | NM | -70°C | SP | U/100 ml |
| 13 | NM | NM | NM | PP | NM | 30s | 3 | 1min | PT 8000 | -20°C | ELISA | ng/ml |
| 14 | NM | NM | NM | µP | NM | 5min | NM | NM | NM | -70°C | SP | U/µl |
| 15 | NM | NM | NM | PP | NM | 1min | NM | NM | NM | -80°C | QAK | pg/ml |
| 16 | NM | NM | NM | PP | 1mm | 30s | NM | NM | NM | -30°C | SP | µg / ml |
| 17 | NM | NM | NM | PP | NM | 30s | NM | NM | NM | -70°C | IA | pg/site |
| 18 | NM | NM | NM | PP | NM | 30s | NM | NM | PT 8000 | NM | LMAT | pg/ml |
| 19 | NM | NM | NM | PP | NM | 1min | 5 | NM | NM | NM | SP | µmolU/L |
| 20 | NM | NM | NM | PP | 1mm | NM | NM | NM | PT 8000 | −80°C | mb-IA | pg/site |
| 21 | NM | NM | NM | PP | NM | 30s | NM | NM | PT8000 | -80°C | Flr | Cp; µU/ µl, Cys; ng/µl |
| 22 | 9am | 20°C | 40% | PP | NM | 30s | NM | NM | NM | -70°C | WB | NM |
| 23 | NM | NM | NM | PP | 1mm | 1min | 2 | 1min | PT8000 | -30°C | ELISA | µg/µl |
| 24 | NM | NM | NM | µP | NM | NM | NM | NM | NM | -70°C | NM | NM |
| 25 | NM | NM | NM | PP | NM | 1min | 2 | 5s | NM | -80°C | ELISA | pmol/mg |
| 26 | NM | NM | NM | PP | 1mm | 30s | NM | NM | NM | -80°C | SP | mU |
| 27 | NM | NM | NM | PP | NM | 3min | NM | NM | NM | -20°C | WB | µg/l |
| 28 | NM | NM | NM | PP | 1mm | 10s | NM | NM | NM | NM | SP | mU/sample |
| 29 | NM | NM | NM | PP | 1mm | 1min | 1 | 30s | NM | -30°C | WB | pU/µl |
| 30 | NM | NM | NM | PP | 1mm | NM | NM | 30s | NM | NM | SP | mU/sample |
| 31 | NM | 21°C | 30% | PP | NM | NM | NM | 30s | PT6000 | -70°C | ELISA | U/30-s GCF sample |
| 32 | NM | NM | NM | PP | 1mm | 1min | 1 | 30s | PT | -30°C | ELISA | pg/µg |
| 33 | NM | NM | NM | PP | NM | NM | NM | 30s | PT8000 | -20°C | ELISA | pg/µL |
| 34 | NM | NM | NM | PP | 1-2mm | 1min | 2 | 1min | NM | NM | SP | µmol/ min |
| 35 | NM | NM | NM | PP | 1mm | NM | NM | 1min | NM | NM | SP | U/mg |
| 36 | NM | NM | NM | PP | 1mm | 1min | 3 | 1min | NM | NM | SP | U/mg |
| 37 | NM | NM | NM | end PP | 1mm | 30s | 3 | 90s | NM | -40°C | SP | µmol/min |
| 38 | NM | NM | NM | end PP | 1mm | 30s | 3 | 90s | NM | -40°C | SP | µmol/min |
| 39 | NM | NM | NM | end PP | 1mm | 30s | 3 | 90s | NM | -40°C | SP | µmol/min |
| 40 | NM | NM | NM | end PP | 1mm | 30s | 3 | 1min | NM | 4°C | SP | µmol/min |
| 41 | NM | NM | NM | µP | 2mm | NM | NM | NM | NM | -70°C | SP | U/mg |
| 42 | NM | NM | NM | PP | 1mm | 30s | NM | NM | NM | -20°C | SP | NM |
| 43 | Y | NM | NM | FP | NM | 1min | NM | 5s | NM | -80°C | PNPP kin | NM |
| 44 | NM | NM | NM | FP | 1mm | 30s | NM | NM | NM | -80°C | SP | mU/sample |
| 45 | NM | NM | NM | µP | NM | NM | NM | NM | NM | NM | SP | U/L |
| 46 | NM | NM | NM | µP | NM | NM | NM | NM | NM | NM | SP | U/L |
| 47 | NM | NM | NM | µP | NM | NM | NM | NM | NM | -80°C | SP | µmol units/L) |
| 48 | NM | NM | NM | pp | 1mm | 30s | NM | NM | NM | NM | SP | mU/sample |
| 49 | NM | NM | NM | µP | NM | NM | NM | 30s | NM | NM | SP | IU/L |
| 50 | Y | NM | NM | PP | 1mm | 30s | NM | NM | PT8000 | -80°C | SP | pg/mL |
| 51 | NM | NM | NM | end PP | 1mm | 30s | NM | NM | NM | -30°C | SP | mU/sample |
| 52 | NM | NM | NM | PP | NM | 30s | 4 | 30s | NM | -70°C | SP | units/100 µL |
| 53 | NM | NM | NM | PP | NM | 30s | 2 | 30s | NM | -70°C | SP | units/100 µL. |
| 54 | NM | NM | NM | pp | 1mm | 1min | NM | NM | NM | NM | SP | mU/s |
A-article, tp-temperature, hm-humidity, mt/o-method of, cl-collection, sp-specification,i ns-insertion, mm-millimeter, du/o-duration of, rep-repeated, i/o-interval of, st-storage, al-analysis, pr-protein, cc-concentration, NM-Not Mentioned, N-No, Y- Yes, PP- Periopaper, PT- Periotron, WB- Western Blot, ELISA- Enzyme linked immunos orbent assay, IA- Immunoassay, RIA- Radio IA, meas-measurement, pg-picogram, µg-microgram, ml-millilitre, µL-microlitre, GCF-gingival crevicular fluid, tot-total, g-gram, ng-nanogram, s-second, min- minutes, 0C-degree Celsius, SP-spectrophotometery, Ar-array, As-assay, mb-multiplex bead, LMAT-Luminex multianalyte techonology, QAK- Quantibody Ar kit, end PP-endodontic paperstrip, FP- Filter paper strips, µP-micropippete, IU-international units, L-litre, LDH-lactate dehydrogenase, AST-aspartate transaminase, TRAP-Acid phosphatase, ALP- Alkaline Phospahatase, PMNs -polymorphonucleosides, Cp -cathepsin, Cys -cysteine, Tot -total, pmol -picomol, flr-flurometery, QA- Quantibody assay, PNPP kin- para nitrophenyl phosphate kinetic, pp- paper point.